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https://issues.apache.org/jira/browse/YARN-11706?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17871902#comment-17871902
]
ASF GitHub Bot commented on YARN-11706:
---------------------------------------
granewang commented on code in PR #6957:
URL: https://github.com/apache/hadoop/pull/6957#discussion_r1708899262
##########
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-client/src/main/java/org/apache/hadoop/yarn/client/cli/RMAdminCLI.java:
##########
@@ -757,6 +768,28 @@ private int replaceLabelsOnNodes(Map<NodeId, Set<String>>
map,
return 0;
}
+ private int failover(CommandLine cmd)
+ throws IOException, ServiceFailedException {
+ int numOpts = cmd.getOptions() == null ? 0 : cmd.getOptions().length;
+ final String[] args = cmd.getArgs();
+ if (numOpts > 1 || args.length != 2) {
+ errOut.println("failover: incorrect arguments");
+ printUsage(errOut, "-failover", YARN_HA_USAGE);
+ return -1;
+ }
+ HAServiceTarget fromNode = resolveTarget(args[0]);
+ HAServiceTarget toNode = resolveTarget(args[1]);
+ setRequestSource(HAServiceProtocol.RequestSource.REQUEST_BY_USER_FORCED);
+ HAServiceProtocol proto = fromNode.getProxy(
+ getConf(), 0);
+ HAServiceProtocolHelper.transitionToStandby(proto, createReqInfo());
+ HAServiceProtocol proto1 = toNode.getProxy(
+ getConf(), 0);
+ HAServiceProtocolHelper.transitionToActive(proto1, createReqInfo());
Review Comment:
If args[1] is the primary,it will return ：
HAServiceProtocolHelper.transitionToActive
->AdminService.java(transitionToActive):
"
@Override
public synchronized void transitionToActive(
HAServiceProtocol.StateChangeRequestInfo reqInfo) throws IOException {
if (isRMActive()) {
**return;**
}
....
"
> Make yarn rmadmin tool support failover function
> -------------------------------------------------
>
> Key: YARN-11706
> URL: https://issues.apache.org/jira/browse/YARN-11706
> Project: Hadoop YARN
> Issue Type: New Feature
> Affects Versions: 3.3.6
> Reporter: wangzhongwei
> Assignee: wangzhongwei
> Priority: Major
> Labels: pull-request-available
>
> Currently,yarn rmadmin can not support failover.This failover step is just
> the same as step :
> yarn rmadmin -transitionToStandby -forcemanual rm1
> yarn rmadmin -transitionToActive -forcemanual rm2
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